Concrete-retaining wall.



J. B. BLAW.

CONCRETE RETAINING WALL.

APPLIUATION FILED JAN.23,1909.

Patented Oct. 18, 1910..

WITNESS s "w ...t

plain concrete wall or abutment.

' UNTED STATES PATENT OFFICE.

JACOB B. BLAW, .OF IYPITTSBURG, :PENNSYLVANIA.,A .ASSIGNOR TO BLAWCOLLAPSIBLE STEEL CENTERING COMPANY, 0F PITTSBURG, PENNSYLVANIA, ACORPORATION or NEW JERSEY.

ONORETE-RETAINING WALL.

Specification of Letters Patent.

Patented Oct. 18, 1910.

To all 'whom it 'may concern:

. Be it known thatA I, JACOB B. BLAW, a 'citizen of the United States,residing at .,Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented cer- .tain new and useful Improvements inConvof metal which may be readily assembled and disassembled, and inwhich` the sections are very securely and rigidly sjipported. neembodiment of the invention is illustrated in the accompanying drawings,wherein: Y

Figure 1 is a plan view `of the inside face of the wall,

Figure 2 is a detail section on the line II-II of Figure l, i

Figure 3 is an enlarged detail plan vview showing the securing means,and

Figure 4 is a perspective view of one of the wedges in position.

It will be understood that the wall constitutes a form against whichconcrete or other similar plastic material is placed and allowedtoharden, after which the wall may be readily taken down and moved to anew location. The device may be used in a variety of ways, such as aconduit form or ymold, or as a portion thereof, or it may be used in theformation of a perfectly fiat R ferring to the drawings, 1 are thestiltening ribs for the walls, which in the present instance are channelbars; 2 are the lagging .plates; 3 are the stilening angles secured'along theopposing sides of the plates; preferably by riveting; 4f areangles riveted to the ends of the plates; 5 are the securing v.loops forholding the plates against the 'backs of the channel bars; and 6 are thewedges for engaging the loops 5. As will be seen from Figure 2 theplates 2 2 abut behind the channel bars 1, and the loops 5-5 which aresecured adjacent the vertical edges of theplates 2 extend throughperforations in the webs of the channel bars land th'e edges of theplates are drawn bars by means of the wedges 6. The flanges of theangles 4 rest against the iianges of the channel bars, and not onlyserve to stiften the lagging plates, but also assist in making a tightjoint between the plates and the channel bars.

It will be seen that by means of the foregoing .construction a retainingwall is secured having a smooth unbroken surface at its rear side forengagement with the concrete, and that this wall although built of sheetmetal is very rigidly stitlened and supported, and may be convenientlyand rapidly assembled, or disassembled in sections. The variousadvantages of the construction will be apparent to those skilled in theart,

Having thus described` my invention and illustrated its use, what Iclaim as new and desire to secure by Letters Patent is the following 1.In combination, a concrete retaining wall comprising spaced channel barswith their flanges projecting inwardly, and having their body portionsintermediate' the flanges provided with perforations, lagging comprisingplates abutting at the backs of the channel bars and provided with loopsin proximity to their abutting edges projecting through the saidperforations, and wedges for the loops.

2. In combination, a concrete retaining wall comprising spaced channelbars with their flanges projecting inwardly, and having their bodyportions intermediate` the u flanges provided with perorations, lagging'comprising plates abuttin at the backsof the channel bars and providedwith loops in proximity to their abutting edges projecting throughv thesaid perforations and arranged transversely of the channel bars inproximityv to the abutting edges of the plates, wedges arrangedlongitudinally of the channel bars, and flanged sections secured alongthe ends of the plates with their flanges abutting the fianges of thechannel. In testimony whereof I have hereunto signed my name in thepresence of the two subscribed witnesses. .JACOB B. BLAW.

Witnesses:

J. C. BRADLEY, AnoHwoR'rH MARTIN.

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